Symptom Troubleshooting Chart - Speed Control

WARNING: This page is about a different car, the 2005 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM TROUBLESHOOTING CHART - SPEED CONTROL

Problem	Possible Cause	Action
The cruise control is inoperative - no flash codes	Smart junction box (SJB) fuse(s): 4 (10A) 6 (15A) 27 (5A) 34 (5A) Circuitry Clockspring Brake pedal position (BPP) switch Clutch pedal position (CPP) switch (manual transaxle) Speed control deactivator switch Speed control switch Digital transaxle range (TR) sensor (automatic transaxle) Anti-lock brake system (ABS) module Speed control actuator	See PINPOINT TEST 1: THE SPEED CONTROL IS INOPERATIVE .
The set speed fluctuates	Circuitry Speed control actuator Anti-lock brake system (ABS) module Base engine problem Loose or binding cruise control cable between the cruise control actuator and the throttle body	See PINPOINT TEST 2: THE SET SPEED FLUCTUATES .
The cruise control does not disengage when the brakes are applied	Circuitry Speed control deactivator switch Brake pedal position (BPP) switch	See PINPOINT TEST 3: THE SPEED CONTROL DOES NOT DISENGAGE WHEN THE BRAKES ARE APPLIED .
The cruise control does not disengage when the clutch is applied	Circuitry Clutch pedal position (CPP) switch	See PINPOINT TEST 4: THE SPEED CONTROL DOES NOT DISENGAGE WHEN THE CLUTCH IS APPLIED .
The cruise control switch is inoperative	Speed control switch Speed control actuator	See PINPOINT TEST 5: THE SPEED CONTROL SWITCH IS INOPERATIVE .
Flash with last switch pressed and dynamic pull occurs at throttle	Normal condition	Test passed.
Flash with last switch pressed, but no dynamic pull occurs at throttle and the cruise control is inoperative	Speed control cable Speed control actuator	See PINPOINT TEST 6: FLASH WITH LAST SWITCH PRESSED, BUT NO DYNAMIC PULL OCCURS AT THROTTLE AND THE SPEED CONTROL IS INOPERATIVE .
Flash with last switch pressed, dynamic pull occurs at throttle and the cruise control is inoperative	Smart junction box (SJB) fuse(s): 4 (10A) 6 (15A) 27 (5A) 34 (5A) Circuitry Clockspring Brake pedal position (BPP) switch Clutch pedal position (CPP) switch Speed control deactivator switch Speed control switch Anti-lock brake system (ABS) module Speed control actuator	See PINPOINT TEST 1: THE SPEED CONTROL IS INOPERATIVE .
Flash Code 3 - deactivator switch circuit failure	Smart junction box (SJB) fuse 27 (5A) Circuitry Deactivator switch Speed control actuator	See PINPOINT TEST 7: FLASH CODE 3 - DEACTIVATOR SWITCH CIRCUIT FAILURE .
Flash Code 4 - clutch/neutral switch circuit failure	Clutch pedal position (CPP) switch Speed control actuator	See PINPOINT TEST 8: FLASH CODE 4 - CLUTCH/NEUTRAL SWITCH CIRCUIT FAILURE .
Flash Code 5 - Cruise control actuator internal failure	Cruise control actuator	INSTALL a new cruise control actuator. See SPEED CONTROL ACTUATOR .
Flash Code 2 - Stop lamp switch circuit failure	Circuitry Stop lamp switch Stop lamp bulbs Speed control actuator	PINPOINT TEST 10: FLASH CODE 2 - STOP SWITCH CIRCUIT FAILURE .
The cruise control indicator lamp is always on	Circuitry Speed control actuator Instrument cluster	See PINPOINT TEST 9: THE SPEED CONTROL INDICATOR LAMP IS ALWAYS ON .
The cruise control drops out when pressing 2 or more buttons simultaneously	Stuck switch detection	This is a normal condition. ADVISE the customer that when a two buttons are pressed simultaneously, the cruise control will go into standby mode. Pressing RESUME will return the vehicle to the memory speed.
The cruise control drops out when pressing buttons	Stuck switch detection	This is a normal condition. ADVISE the customer that when a switch is pressed with another switch already pressed, cruise control will go into standby mode. Pressing RESUME will return the vehicle to the memory speed.
Speed control is hard to set	Stuck switch detection	This is a normal condition. ADVISE the customer that the ON switch must be pressed and released before the SET/ACCEL switch is pressed. Speed will set after the SET/ACCEL switch is pressed and released.